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Braking resistor cabinet principle
Jan 25, 2018

Braking resistor cabinet principle


First, the brake resistor cabinet principle: brake unit consists of high-power transistor GTR and drive circuit. Its function is to discharge the current part of the capacitor capacitor can not be stored within the rules or the internal resistance of the brake resistor cabinet too late to spend some DC over-voltage, the need to add external braking components to speed up the consumption of renewable energy speed.

Second, the brake resistor motor principle: the motor in the process of reducing operating frequency, will be in the regenerative braking conditions, drag the kinetic energy of the system to be fed back to the DC circuit, the DC voltage UD rising, and may even reach the risk of the situation. Therefore, the energy regenerated to the DC circuit must be dissipated so that the UD remains within the agreed range. Brake resistance cabinet is used to consume some of this energy.